Muntin cross joint in an insulated metal closure



Patented Oct. 6, 1953 MUNTIN CROSS JOINT IN AN INSULATED METAL CLOSURE Martin E. Priem, Bristol, Ind., assignor, by mesne assignments, to Victor M. Langsett, Chicago,

111., as trustee Application July 16, 1952, Serial No. 299,129

3 Claims. 1

This invention relates to improvements in the construction of the muntins at the cross joints used in an insulated metal opening closure, particularly in connection with metal window sash and doors used in buildings where glazing is employed in sizes smaller than the area of the entire opening.

The particular forms of the sections employed in constructing the insulated sash members and the muntins are fully described in the co-pending application of Ward P. Kessler, Serial No. 164,643, filed May 27, 1950, who is the assignee hereunder, and which is referred to for a more complete description, and which are not claimed as part of my invention.

An object of my invention is to utilize the integral strength of the insulating member in the horizontal muntin and the integral strength of the metal sections in the vertical muntin to form a compact cross joint, structurally strong, yet not requiring the use of additional material or parts.

A further object of my invention is to provide a cross joint capable of easy assembly by a novel use of the members, presenting a pleasing appearance, and maintaining the respective members in relatively the same plane.

A further object is to provide muntins adapted to the purpose of supporting the glazing and yet maintain continuous insulation between the exterior and interior metal sections.

Further objects and advantages of the invention will be apparent from the following specification and the accompanying drawings, wherein a preferred embodiment of the invention has been shown and described.

In the drawings:

Figure 1 is a perspective view, partially cut away and partially exploded, of a muntin cross joint.

Figure 2 is a cross-sectional view of the muntin structure of Figure 1 on the line 2-2.

The nature of muntins is so well known that I have not shown in the drawings, a complete frame, window or otherwise, within which the muntins are used to divide the total area to be glazed, into smaller sections, but it is to be understood that I use the muntins for such standard purpose.

Similar numerals refer to throughout the several views.

Referring to Figures 1 and 2 of the drawings, Figure 1 shows a muntin cross joint, designated generally as IE1, formed by the intersection of the horizontal muntin I I and. the vertical muntin similar parts 2 I2. The muntins II and I2 are similar in construction, consisting of similar insulating members, designated as I3 in the vertical muntin I2 and I4 in the horizontal muntin II for purposes of differentiation only, formed from laminated wood or any substantially non-flexible insulating material, supporting upon opposite sides thereof, in a spaced apart relationship, channeled metal sections, designated for purposes of differentiation, as I5, I5in the vertical muntin I2 and I6, I6 in the horizontal muntin II. The glazing units (not shown) each preferably consisting of two panes of glass spaced apart for insulating purposes, are disposed in the channels II, II formed by the non-contacting metal sections I5 and I6, where they are held in position by the glazing beads or putty retaining strips I8, I8, with the assistance of the screws I9, I9.

My invention lies in forming the cross joint with the foregoing structure, by using the integral strength of the insulating member I4 and the integral strength of the metal sections I5, I5. I accomplish this by removing a portion of each of the channel sidewalls of the sections I5, I5, as at 20, 20, to accommodate the insulating member I4, which extends through the joint, horizontally, without impairment to its original strength or its original size and form, indicated by the cut-away portion at 2i, and the sections I5, I5 extending through the joint, vertically, without interruption, and without impairment, except to the extent occasioned by the removal at 20, 2B of the small portions necessary to accommodate the insertion of the cross-member Id. The vertical insulating members I3, I3 terminate at and abut against both sides of the member I4 at the cross joint, as at 22, and the horizontal metal sections I6, I6 terminate and abut against both sides of the vertical sections I5, I5, as at 23. All of the glazing strips I8, I8 terminate at the cross joint, their respective ends abutting against adjacent surfaces, as shown as at 24, 24, completing the structure. It is apparent, by the described form of interlocking the members, that I achieve great structural strength, as well as a streamlining of the contours, substantially improving the appearance of the joint, the rigidity of which is enhanced by the support of the noncontinuing members I3, I3 and I6, I6, the respective ends of which abut the continuing members I4 and I5, I5, respectively.

While I have shown and described herein, for illustration purposes, a preferred embodiment of my invention, it should be understood that considerable variation in the details of construc- 3 tion may be employed, without departing from the spirit and scope of the invention, as set forth in the following claims.

I claim:

1. A muntin cross joint in an insulated metal closure comprising a horizontal insulating member extending through said joint; vertical in sulating membersabutting, respectively, opposite sides of said horizontal member; metal sections,

channel shaped in cross-section, superimposed;

over opposite marginal sides of said vertical members in spaced apart relationship, extending through said joint, the respective channel side walls of said sections, removed in part, accom modating and abutting against. the adjacent exterior surfaces of said horizontal member; and metal sections, channel shaped incross-section, superimposed over opposite marginal sides of said horizontal member in spaced apart relationship, terminating at and abutting, respectively, said? vertical. sections.

2. A muntin cross joint-in. an insulated metal closure comprising a; substantially non-flexible horizontal insulating; member extending through said joint; vertical substantially non-flexible insulating members abutting, respectively, opposite sides of. said. horizontal member; metal sections, channel shaped in cross-section, superimposed over opposite. marginal sides of said vertical members in spaced. apart relationship, extending through said joint, the respective channel side Walls of said sections removed in part, accommodating and abutting against the adjacent exterior surface of said horizontal member; and metal sections, channel shaped in cross-section, superimposed over opposite marginal side of said horizontal member in spaced apart relationship, terminating at and abutting, respectively, said Vertical sections.

3. A muntin cross joint in an insulated metal closure comprising a horizontal insulating member extending through said joint; vertical insulating members abutting, respectively, opposite sides; of said horizontal member; metal sections, channel, shaped cross-section, superimposed over oppositemarginal sides of said vertical members in spaced apart relationship, extending through said joint, the respective channel side walls of; said sections, removed in part, accommodating and abutting against the adjacent exterior surfacesof. said horizontal member; metal sections, channel shaped. in. cross-section, supere imposed over opposite marginal sides of said horizontal member in, spaced apart relationship, terminating at and abutting, respectively, said verti-.w cal sections; and glazing, retaining means at! tached to said sections.

MARTIN E. PRIEM.

Noreferences citedl 

